<script setup>
import { onMounted, ref } from 'vue'
import { queryPageApi, queryAllApi, queryAllRolesApi, addApi, queryById, updateApi, deleteApi } from '@/api/user'
import { ElMessage, ElMessageBox } from 'element-plus'

// 查询参数
const queryParams = ref({
  name: '',
  phone: '',
  deptId: '',
  status: '',
  page: 1,
  pageSize: 10
})

// 表格数据
const userList = ref([])
const total = ref(0)

// 部门列表
const deptList = ref([])

// 角色列表
const roleList = ref([])

// 加载状态
const loading = ref(false)

// 选中的用户ID列表
const selectedUserIds = ref([])

// 对话框相关
const formTitle = ref('')
const dialogFormVisible = ref(false)
const formLabelWidth = '70px'

// 用户表单数据
const userForm = ref({
  username: '',
  password: '',
  name: '',
  phone: '',
  email: '',
  gender: '',
  status: '',
  deptId: '',
  roleId: '',
  image: '',
  remark: ''
})

// 表单校验规则
const userFormRef = ref(null)
const rules = ref({
  username: [
    { required: true, message: '用户名不能为空', trigger: 'blur' },
    { min: 2, max: 20, message: '用户名长度在2-20个字符之间', trigger: 'blur' }
  ],
  name: [
    { required: true, message: '姓名不能为空', trigger: 'blur' },
    { min: 2, max: 20, message: '姓名长度在2-20个字符之间', trigger: 'blur' }
  ],
  phone: [
    { required: true, message: '手机号不能为空', trigger: 'blur' },
    { pattern: /^1[3-9]\d{9}$/, message: '请输入正确的手机号', trigger: 'blur' }
  ],
  email: [
    { required: true, message: '邮箱不能为空', trigger: 'blur' },
    { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' },
    { min: 5, max: 50, message: '邮箱长度在5-50个字符之间', trigger: 'blur' }
  ],
  gender: [
    { required: true, message: '性别不能为空', trigger: 'blur' }
  ],
  status: [
    { required: true, message: '状态不能为空', trigger: 'blur' }
  ]
})

// 搜索
const search = async () => {
  loading.value = true;
  try {
    const result = await queryPageApi(queryParams.value);
    if(result.code == 1){
      userList.value = result.data.rows;
      total.value = result.data.total;
    } else {
      ElMessage.error(result.msg || '查询失败');
    }
  } catch (error) {
    console.error('查询用户列表失败:', error);
    ElMessage.error('查询失败，请稍后重试');
  } finally {
    loading.value = false;
  }
}

// 清空
const clear = () => {
  queryParams.value = {
    name: '', 
    phone: '', 
    deptId: '', 
    status: '', 
    page: 1, 
    pageSize: 10
  };
  search();
}

// 分页大小改变
const handleSizeChange = (val) => {
  queryParams.value.pageSize = val;
  queryParams.value.page = 1;
  search();
}

// 页码改变
const handleCurrentChange = (val) => {
  queryParams.value.page = val;
  search();
}

// 获取部门列表
const getDeptList = async () => {
  try {
    const result = await queryAllApi();
    if(result.code == 1){
      deptList.value = result.data;
    } else {
      ElMessage.error(result.msg || '获取部门列表失败');
    }
  } catch (error) {
    console.error('获取部门列表失败:', error);
    ElMessage.error('获取部门列表失败，请稍后重试');
  }
}

// 获取角色列表
const getRoleList = async () => {
  try {
    const result = await queryAllRolesApi();
    if(result.code == 1){
      roleList.value = result.data;
    } else {
      ElMessage.error(result.msg || '获取角色列表失败');
    }
  } catch (error) {
    console.error('获取角色列表失败:', error);
    ElMessage.error('获取角色列表失败，请稍后重试');
  }
}

// 添加用户
const handleAdd = () => {
  dialogFormVisible.value = true;
  formTitle.value = '新增用户';
  userForm.value = {
    username: '',
    password: '',
    name: '',
    phone: '',
    email: '',
    gender: '',
    status: '',
    deptId: '',
    roleId: '',
    image: '',
    remark: ''
  };
  
  if (userFormRef.value) {
    userFormRef.value.resetFields();
  }
}

// 修改用户
const handleEdit = async (id) => {
  try {
    const result = await queryById(id);
    if(result.code == 1){
      dialogFormVisible.value = true;
      formTitle.value = '修改用户';
      userForm.value = { ...result.data };
      
      if (userFormRef.value) {
        userFormRef.value.resetFields();
      }
    } else {
      ElMessage.error(result.msg || '获取用户信息失败');
    }
  } catch (error) {
    console.error('获取用户信息失败:', error);
    ElMessage.error('获取用户信息失败，请稍后重试');
  }
}

// 保存用户
const save = async () => {
  userFormRef.value.validate(async (valid) => {
    if(valid) {
      try {
        let result;
        if(userForm.value.id) {
          // 修改用户
          result = await updateApi(userForm.value);
        } else {
          // 新增用户，设置默认密码
          userForm.value.password = userForm.value.username + '123';
          result = await addApi(userForm.value);
        }
        
        if(result.code == 1) {
          ElMessage.success('操作成功');
          dialogFormVisible.value = false;
          search();
        } else {
          ElMessage.error(result.msg || '操作失败');
        }
      } catch (error) {
        console.error('保存用户失败:', error);
        ElMessage.error('保存失败，请稍后重试');
      }
    } else {
      ElMessage.error('请填写正确的数据');
    }
  });
}

// 删除用户
const handleDelete = (id) => {
  ElMessageBox.confirm('您确认要删除该用户吗?', '提示', {
    confirmButtonText: '确认',
    cancelButtonText: '取消',
    type: 'warning',
  }).then(async () => {
    try {
      const result = await deleteApi(id);
      if(result.code == 1) {
        ElMessage.success('删除成功');
        search();
      } else {
        ElMessage.error(result.msg || '删除失败');
      }
    } catch (error) {
      console.error('删除用户失败:', error);
      ElMessage.error('删除失败，请稍后重试');
    }
  }).catch(() => {
    ElMessage.info('已取消删除');
  });
}

// 批量删除
const handleBatchDelete = () => {
  if(selectedUserIds.value.length === 0) {
    ElMessage.warning('请选择要删除的用户');
    return;
  }
  
  ElMessageBox.confirm(`您确认要删除选中的 ${selectedUserIds.value.length} 个用户吗?`, '提示', {
    confirmButtonText: '确认',
    cancelButtonText: '取消',
    type: 'warning',
  }).then(async () => {
    try {
      const ids = selectedUserIds.value.join(',');
      const result = await deleteApi(ids);
      if(result.code == 1) {
        ElMessage.success('批量删除成功');
        selectedUserIds.value = [];
        search();
      } else {
        ElMessage.error(result.msg || '批量删除失败');
      }
    } catch (error) {
      console.error('批量删除用户失败:', error);
      ElMessage.error('批量删除失败，请稍后重试');
    }
  }).catch(() => {
    ElMessage.info('已取消删除');
  });
}

// 表格选择变化
const handleSelectionChange = (selection) => {
  selectedUserIds.value = selection.map(item => item.id);
}

// 文件上传前的验证
const beforeUpload = (file) => {
  const isImage = file.type === 'image/jpeg' || file.type === 'image/png' || file.type === 'image/jpg';
  const isLt2M = file.size / 1024 / 1024 < 2;

  if (!isImage) {
    ElMessage.error('上传头像图片只能是 JPG/PNG/JPEG 格式!');
    return false;
  }
  if (!isLt2M) {
    ElMessage.error('上传头像图片大小不能超过 2MB!');
    return false;
  }
  return true;
}

// 文件上传成功
const handleUploadSuccess = (response, file) => {
  if (response.code === 1) {
    userForm.value.image = response.data;
    ElMessage.success('头像上传成功');
  } else {
    ElMessage.error(response.msg || '头像上传失败');
  }
}

// 文件上传失败
const handleUploadError = (error) => {
  console.error('头像上传失败:', error);
  ElMessage.error('头像上传失败，请稍后重试');
}

//页面刷新
onMounted(() => {
  getDeptList();
  getRoleList();
  search();
})
</script>

<template>
  <div class="user-management">
    
    <!-- 搜索区域 -->
    <el-form :inline="true" :model="queryParams" ref="queryForm" class="search-form">
      <el-form-item label="姓名">
        <el-input v-model="queryParams.name" placeholder="请输入姓名"/>
      </el-form-item>
      <el-form-item label="手机号">
        <el-input v-model="queryParams.phone" placeholder="请输入手机号"/>
      </el-form-item>
      <el-form-item label="部门">
        <el-select v-model="queryParams.deptId" placeholder="请选择" clearable style="width: 100%">
          <el-option 
            v-for="dept in deptList" 
            :key="dept.id" 
            :label="dept.name" 
            :value="dept.id" 
          />
        </el-select>
      </el-form-item>
      <el-form-item label="状态">
        <el-select v-model="queryParams.status" placeholder="请选择" clearable style="width: 100%">
          <el-option label="正常" :value="1" />
          <el-option label="停用" :value="0" />
        </el-select>
      </el-form-item>
      <el-form-item class="search-buttons">
        <el-button type="primary" @click="search"><el-icon><Search /></el-icon>搜索</el-button>
        <el-button @click="clear"><el-icon><Refresh /></el-icon>清空</el-button>
      </el-form-item>
    </el-form>
    
    <!-- 操作按钮区域 -->
    <div class="operation-area">
      <el-button type="primary" @click="handleAdd"><el-icon><Plus /></el-icon>添加用户</el-button>
      <el-button type="danger" @click="handleBatchDelete" :disabled="selectedUserIds.length === 0">
        <el-icon><Delete /></el-icon>批量删除
      </el-button>
    </div>

    <!-- 表格区域 -->
    <el-table 
      :data="userList" 
      style="width: 100%" 
      border 
      v-loading="loading"
      @selection-change="handleSelectionChange"
    >
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column prop="name" label="姓名" width="120" align="center" />
      <el-table-column prop="username" label="用户名" width="150" align="center" />
      <el-table-column label="头像" width="80" align="center">
        <template #default="scope">
          <el-avatar 
            :size="40" 
            :src="scope.row.image" 
            :icon="scope.row.image ? undefined : 'UserFilled'"
          />
        </template>
      </el-table-column>
      <el-table-column prop="deptName" label="部门" width="150" align="center" />
      <el-table-column prop="roleName" label="角色" width="150" align="center" />
      <el-table-column prop="phone" label="手机号" width="150" align="center" />
      <el-table-column prop="status" label="状态" width="100" align="center">
        <template #default="scope">
          <el-tag :type="scope.row.status === 1 ? 'success' : 'danger'">
            {{ scope.row.status === 1 ? '正常' : '停用' }}
          </el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="updateTime" label="最后操作时间" width="200" align="center" />
      <el-table-column label="操作" align="center">
        <template #default="scope">
          <el-button type="primary" link @click="handleEdit(scope.row.id)">
            <el-icon><Edit /></el-icon>修改
          </el-button>
          <el-button type="danger" link @click="handleDelete(scope.row.id)">
            <el-icon><Delete /></el-icon>删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页区域 -->
    <div class="pagination">
      <el-pagination
        v-model:current-page="queryParams.page"
        v-model:page-size="queryParams.pageSize"
        :page-sizes="[10, 20, 30, 40, 50]"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />
    </div>

    <!-- 用户表单对话框 -->
    <el-dialog v-model="dialogFormVisible" :title="formTitle" width="700px">
      <el-form :model="userForm" :rules="rules" ref="userFormRef" :label-width="formLabelWidth">
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="用户名" prop="username">
              <el-input v-model="userForm.username" placeholder="请输入用户名" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="姓名" prop="name">
              <el-input v-model="userForm.name" placeholder="请输入姓名" />
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="手机号" prop="phone">
              <el-input v-model="userForm.phone" placeholder="请输入手机号" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="userForm.email" placeholder="请输入邮箱" />
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="性别" prop="gender">
              <el-select v-model="userForm.gender" placeholder="请选择" style="width: 100%">
                <el-option label="男" :value="1" />
                <el-option label="女" :value="2" />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="状态" prop="status">
              <el-select v-model="userForm.status" placeholder="请选择" style="width: 100%">
                <el-option label="正常" :value="1" />
                <el-option label="停用" :value="0" />
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-row :gutter="20">
          <el-col :span="12">
            <el-form-item label="部门">
              <el-select v-model="userForm.deptId" placeholder="请选择" clearable style="width: 100%">
                <el-option 
                  v-for="dept in deptList" 
                  :key="dept.id" 
                  :label="dept.name" 
                  :value="dept.id" 
                />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="角色">
              <el-select v-model="userForm.roleId" placeholder="请选择" clearable style="width: 100%">
                <el-option 
                  v-for="role in roleList" 
                  :key="role.id" 
                  :label="role.name" 
                  :value="role.id" 
                />
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        
        <el-form-item label="头像">
          <el-upload
            ref="uploadRef"
            class="avatar-uploader"
            action="/api/upload"
            name="image"
            :show-file-list="false"
            :before-upload="beforeUpload"
            :on-success="handleUploadSuccess"
            :on-error="handleUploadError"
          >
            <img v-if="userForm.image" :src="userForm.image" class="avatar" />
            <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
          </el-upload>
          <div class="upload-tip">图片上传,支持扩展名: .png/.jpg/.jpeg 大小限制: 2M</div>
        </el-form-item>
        
        <el-form-item label="备注说明">
          <el-input  v-model="userForm.remark" type="textarea" :rows="3" placeholder="请输入用户的备注信息,最多200字" maxlength="200" show-word-limit />
        </el-form-item>
           
      </el-form>

      <template #footer>
        <div class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取消</el-button>
          <el-button type="primary" @click="save">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<style scoped>
.user-management {
  padding: 20px;
  background-color: #fff;
  min-height: 100%;
  border-radius: 8px;
}

.operation-area {
  margin: 20px 0;
}

.search-form {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.search-form :deep(.el-form-item) {
  margin-right: 20px;
  margin-bottom: 10px;
  min-width: 200px;
}

.search-buttons {
  margin-left: auto !important;
  min-width: auto !important;
}

.pagination {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

:deep(.el-button .el-icon) {
  margin-right: 4px;
}

.avatar-uploader {
  text-align: center;
  /* 添加圆角边框线 */
  border: 1px solid #d9d9d9;
  border-radius: 4px;
}

.avatar-uploader .avatar {
  width: 80px;
  height: 80px;
  display: block;
  border-radius: 4px;
}

.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}

.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}

.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 80px;
  height: 80px;
  line-height: 80px;
  text-align: center;
}

.upload-tip {
  font-size: 12px;
  color: #999;
  margin-top: 8px;
  line-height: 1.4;
}

.dialog-footer {
  text-align: center;
}
</style>
